From b6ca440a8ff15e12478ea6f026a52970e7a0c54c Mon Sep 17 00:00:00 2001 From: Borislav Petkov Date: Wed, 16 Jul 2008 20:33:46 +0200 Subject: ide-cd: simplify request issuing path Call cdrom_start_packet_command() only from the ->do_request() routine. As a nice side effect, this improves code readability a bit. There should be no functionality change resulting from this patch. Signed-off-by: Borislav Petkov Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/ide/ide-cd.c | 39 +++++++++++++++++++++------------------ 1 file changed, 21 insertions(+), 18 deletions(-) (limited to 'drivers/ide') diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c index a9be4bf87dd..b61ce5ee08e 100644 --- a/drivers/ide/ide-cd.c +++ b/drivers/ide/ide-cd.c @@ -753,14 +753,12 @@ static ide_startstop_t cdrom_start_seek_continuation(ide_drive_t *drive) return cdrom_transfer_packet_command(drive, rq, &cdrom_seek_intr); } -static ide_startstop_t cdrom_start_seek(ide_drive_t *drive) +static void cdrom_start_seek(ide_drive_t *drive) { struct cdrom_info *info = drive->driver_data; info->dma = 0; info->start_seek = jiffies; - return cdrom_start_packet_command(drive, 0, - cdrom_start_seek_continuation); } /* @@ -1135,8 +1133,7 @@ static ide_startstop_t cdrom_start_rw(ide_drive_t *drive, struct request *rq) if (write) cd->devinfo.media_written = 1; - /* start sending the read/write request to the drive */ - return cdrom_start_packet_command(drive, 32768, cdrom_start_rw_cont); + return ide_started; } static ide_startstop_t cdrom_do_newpc_cont(ide_drive_t *drive) @@ -1149,7 +1146,7 @@ static ide_startstop_t cdrom_do_newpc_cont(ide_drive_t *drive) return cdrom_transfer_packet_command(drive, rq, cdrom_newpc_intr); } -static ide_startstop_t cdrom_do_block_pc(ide_drive_t *drive, struct request *rq) +static void cdrom_do_block_pc(ide_drive_t *drive, struct request *rq) { struct cdrom_info *info = drive->driver_data; @@ -1188,10 +1185,6 @@ static ide_startstop_t cdrom_do_block_pc(ide_drive_t *drive, struct request *rq) ((unsigned long)current->stack & stack_mask))) info->dma = 0; } - - /* start sending the command to the drive */ - return cdrom_start_packet_command(drive, rq->data_len, - cdrom_do_newpc_cont); } /* @@ -1200,8 +1193,9 @@ static ide_startstop_t cdrom_do_block_pc(ide_drive_t *drive, struct request *rq) static ide_startstop_t ide_cd_do_request(ide_drive_t *drive, struct request *rq, sector_t block) { - ide_startstop_t action; struct cdrom_info *info = drive->driver_data; + ide_handler_t *fn; + int xferlen; if (blk_fs_request(rq)) { if (info->cd_flags & IDE_CD_FLAG_SEEKING) { @@ -1221,16 +1215,23 @@ static ide_startstop_t ide_cd_do_request(ide_drive_t *drive, struct request *rq, } if (rq_data_dir(rq) == READ && IDE_LARGE_SEEK(info->last_block, block, - IDECD_SEEK_THRESHOLD) && - drive->dsc_overlap) - action = cdrom_start_seek(drive); - else - action = cdrom_start_rw(drive, rq); + IDECD_SEEK_THRESHOLD) && + drive->dsc_overlap) { + xferlen = 0; + fn = cdrom_start_seek_continuation; + cdrom_start_seek(drive); + } else { + xferlen = 32768; + fn = cdrom_start_rw_cont; + if (cdrom_start_rw(drive, rq) == ide_stopped) + return ide_stopped; + } info->last_block = block; - return action; } else if (blk_sense_request(rq) || blk_pc_request(rq) || rq->cmd_type == REQ_TYPE_ATA_PC) { - return cdrom_do_block_pc(drive, rq); + xferlen = rq->data_len; + fn = cdrom_do_newpc_cont; + cdrom_do_block_pc(drive, rq); } else if (blk_special_request(rq)) { /* right now this can only be a reset... */ cdrom_end_request(drive, 1); @@ -1240,6 +1241,8 @@ static ide_startstop_t ide_cd_do_request(ide_drive_t *drive, struct request *rq, cdrom_end_request(drive, 0); return ide_stopped; } + + return cdrom_start_packet_command(drive, xferlen, fn); } -- cgit v1.2.3